Friction-clutch.



No. 890,672. PATENTED mmle, 1908.

E. 1). MACKINTOSH. FRICTION CLUTCH.

APPLIGATION FILED NOV. 27, 1905.

WT/VESSES f/VVDVTO/Q ance of unbalance Improvement in UNITED SATES 7 Par EDWARD D. MACKINTOSH, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO GQMPANY, OF NEW YORK,

'orrron.

S. S. HEPWORTH N. Y., i l-CORPORATION OF NEW YORK.

FRICTION-CLUTCH.

Specification of Letters Patent.

Patented June 16, 1908.

Application filed November 27, 1905. Serial No. 2891174.

T 0 all whom it may concern. 7

Be it known that I, EDWARD D. MAOKIN- Tosn, of the borough of Brooklyn, in the city of New York, county of Kings, and State of New York, have invented anew and useful Friction-Clutches, of which the following 18 a specification.

The object of m invention is the avoidd stresses in the action of such clutches.

Referring .to the accom anying drawings forming part of this s ecifiization: Figures 1 and 2 are front and side views respectivel of my invention as applied to the arms and uh of a pulley. Fig. 3 is a section on the line 3 of Fig. 1. Fig. 4 shows my improved clutch for use as a brake.

The pulley hub a runs loosely on 'a shaft b Two flexible to which is fixed the drum 0. bands at lined with leather or other suitable material are secured to eye pieces ethrough whichpassstudsf These studs are'secure'd to the pulley arms and form anchorages for the flexible bands. bands are formed with stems 9 having nuts h that bear, in each case, on the arm of a lever i secured to'one end of a rock shaft 7'. This rock shaft passes loosel through a bearing 7c forming partof the u ley arms and has on its other end a lever m which forms part of an equalizer n. T e equalizer is pivoted at 0 0 toa sleeve 1) ar ranged to slide on the outside of thepulley hub a but is prevented from turning b means of jaws g which form part of the equa izer and which engage with posts 1* forming part of the pulley. arms. The motion of the equalizer on the pivots is of a swinging nature and is limited by the two stops 8 forming part of the sleeve p. The drawings show the clutch as set, the bands d being held in contact vwith the drum 0 by the action of the wedgestt on the levers The equalizer is clear of the stops 8 and each of the levers Z is tending to swing both bands then .draw the a corresponding'stud m.

The opposite ends of the I engaging with a Wed e of the wedges m in a direction opposite to I that in which the other istendmg to swing them. The reaction of each lever is the action on the other an'dithe pull on the flexible bands is therefore equal and o posite. B

sliding the sleeve to the end of t .2 pulley hu the equalizer with its wedgesis withdrawn from the osigionwhere the latter act to hold the flexi le ands a a springs t attached totile pulley arms and the latter away from the drum. Referring now to Fig. 4 showing my invention arranged to act as a brake.- The two anchorages are representedat u and v, the former acting also as a stud on which one of the two levers w rocks. The other rocks on the anchorage v are fixed in relation to each other. The two levers w are connected and operated by a link of adjustable length and a lever y. x Having described my invention what I claim as new, and desire to secure by Letters Patent, is:'

1. In a friction clutch, a drum, two bands bearing on the drum and-pulling each on the other, and two anchorages dividing between them the pull of the drum upon the bands.

2. Ina friction clutch, a drum between two anchorages, and two bands bearing on the drum, held by pulling each on the other.

3. In a friction clutch, two anchorages, a. and two bands pulling ;on the two drum,;

anchorages and, inlopposite parallel directions, on eachother.

I In, testimony whereof I have signed my name to this specification in the presence of two subscribing w tnesses. I

EDWARD D. MACKINTOSH.

Witnesses B. VAN NAME,

HENRY J. SIEBERT.

inst. the drum, and

The two studs and the two anchorages, and 

